CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 2,2010, Pages 107-109, doi:10.3760/cma.j.issn.1007-9408.2010.02.006
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 2,2010, Pages 170-171, doi:10.3760/cma.j.issn.1007-9408.2010.02.030
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 2,2010, Pages 102-106, doi:10.3760/cma.j.issn.1007-9408.2010.02.005
CHINESE JOURNAL OF PERINATAL MEDICINE, Volume 13, Issue 2,2010, Pages 140-141, doi:10.3760/cma.j.issn.1007-9408.2010.02.016